The resolution mentioned above
should overcome the scripting errors within the MMC.

A potential workaround to this issue is
to uninstall the MS05-052 until such time as a subsequent
patch overcomes the issues it causes with MMC applications. Before
uninstalling the hotfix, consider potential exposure to the issues addressed in the
hotfix. It is advisable to avoid using Internet Explorer on the MailEnable
server or restrict its access to the Internet to mitigate the risk of
the potential exploits outlined in Security Bulletin
MS05-052.

Instructions for uninstalling Security Bulletin
MS05-052 follow:

Security Bulletin MS05-052
may prevent Explorer from functioning correctly, therefore, change Explorer to use the
Windows Classic View. This is done under the Change the view setting had to
use the Spuninst.exe utility located in the Tools > Folder Options
menu.

Use Explorer to
navigate to %Windir%\$NTUninstallKB896688-IE6SP1-20051004.130236$\Spuninst folder
(or use the command line to change to the directory).

From this directory, run
spuninst.exe (which removes the update from the computer)

MORE INFORMATION

More information on Security
Bulletin MS05-052 is available from the Microsoft Web Site, or by contacting
Microsoft directly.